Water meter



Dec. 1, 1931.

E. GRANGER 1,834,025

WATER METER Filed March 15. v1928 2 Sheets-Sheet 1 Fig.1. 2

. INVEIWUH AU'OH/VEYS.

Dec. 1, 1931. GRANGER 1,834,025

v WATER METER F 5 Filed March 13. 1928 2 SheetsQ-Sheet 2 1 20 Fig.6

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Patented Dec. 1, 1931- b k-F CE" ""QWA'T'EB. m;

Application filed man-1 ,1928; scan No. 261,351, and in France March. s, 1927.

This inventionrelates to. "improvements in water or other-fluid meters of the rotary p1ston type, 1

One or it'sobje'cts is thel rovis ion Ora a; c 5 ter of this character which is simpleand come pact in constructiomwhich isv reliable and efficient in operation and-whose parts are so constructed to reduce friction to a minimum.

.Other features of the-inventionreside in the detailed constru-ctionand arrangement of its-parts hereinafter described, and partic ularly pointed out in the appended claims.

In the accompanying drawings Figure 1 is, a vertical-longitudinal section 115 of a watenmeter embodying myginvention,

' taken substantially in the plane of line;A B, Figure 2. l igurev ais atop plan view ofthe device with the top platelof the cylindrical chamber removed. Figures 3; .4 and "5 show v a side elevation, atop plan, and a vertical views.

section, respectively, .of the rotaryfi'pistonn Figures 6 and 7 showa verticalsection and a top plan view, respectively, of the lower a cylindrical chamber has a clrcular recesslO' in which the bar 135. and boss 12 are;free-to operate,"said recess also: constituting ,abalplate of the cylindrical chamber. FFiguresB 2.5 and 9 show a sideelevationand a 'plan view gt the circular wall of the cylindrical cham er. J a i Similar characters f reference findicate corresponding parts throughout 1 theseveral 7 As shown in Figure "l, thecasing ofthe meter consists of a lower section '1 and an upper section 2 suitablyjoined by'bolts or similar fasteners..- Appliedto the upper cas- 35 ing-section is a glass 3, through which the readings of the meter may be obs ervedi'fl 1* Thelower ca-sing section 1 is provided adjacent its'lower end with a partition 4i which divides the meter into superposedchambers,

' 0 one having an inlet 5 for the admission-ofthe fluid to be metered" and the other-having an outlet or exhaustf6' for the dischargeof the metered fluidu 5 J 1 1 Supported on thepartition-4 is a' cylindrical chamber or casing consisting;ofa base plate 7; a circular wall or cylinder 3, a radial -.blade or partition 9, and atop platelO. The 7 radial disposition of the blade 9 is effected-by opposing grooves 31 and 32 formed in the neck of the base plate 7 and in the inner side of the; cylinder 8, respectively. 1 To insure these grooves being maintained in their relplate 7 has a stud25 rising therefromwhich engages a corresponding opening 5 26 in the lower edge of the cylinden; I

Operating eccentrically within the cylindrical chamber provided bytthe, parts7, 8 and 10 is a circular piston) 11 provided at its top; with a head orpartition 33 carrying a ancing chamber for the piston 11. x The head 33 of the piston 11 divides the latter inconju'nction with. the top plate 10 into two cha'mbersr27 and 30,2-and one or more openings 28 in said partition. provide. for intercommunication between the chambers.

This construction aflords an absolute balancingfof the piston since thefluid pressure is exerted equally onboth faces of the piston head. t a

The fluid to be lindrical chamber formed the parts 7,. 8 and 10' through a substantially crescent- :shapedjinletport 17 located in the-base plate 7 of :said chamberjw Before I enteringithis chamber, the fluid is filtered through a largesurfacedstrainer' 16 applied to the lower side T lati've positionsto rec'eivethe blade, the base of the base plate 7 The fiuid imparts a circular-motion to the piston 11 and is discharged from the working cylinder through an outlet port 18 formed in the cylindrical wall 8. As shown in Figure 2, the inlet port 17 is arranged at one side of the blade 9 and v the outlet port 18 is arranged on the opposite side thereof. The head of the piston 11 is I hollowed out or recessed in an outwardlyconverging manner, as shown at 19, in order to permit of the action of the piston relative to the blade: 9;, .The"piston is also slit at. 20

in order to pe rmit guidance ofthe piston relative to the blade and the same is also slit intermediate its upper and lower ends, as

shown at 21 and 22, in order to permit ofth'e admission and discharge of extreme volumes of the fluid as well as to reduce the surface of friction-0n the diaphragm; ,7 p

As shown inFigure 3, the corners 23 and 24 ofthe opening resulting fromthe slits 21 and 22, and the corners 29 of the boss 12 are preferably rounded;

- The various parts" of this device" which come in contact with the liquid to be metered should be made of a suitable materialto with stand the-corrosive'eflect produced thereby, and I prefer to use jebonite, nickel or 'like material; I 4 V *By applying power to the spindle '13 this device may be used as a Volumetric pump.

- The present embodiment of my invention has been" disclosed merely by Way-of example, and it is to be understoodthat various changes in thedetails of construction and arrangement ofpar'ts may be made in accordance with the spirit'and'scop'e of the "invention as defined in e/appended claims. I claim: as my'invention 1'. A water meter of theicharacter described,

comprising a casing having an inletand an outlet,a cylindrical chamber housed within said casing and havingports communicating with-the casing-inlet and casingoutlet, said chamber including top and bottom walls and spaced'inner and outer concentric'walls there j between, a blade disposed radially'of said chamber-between its inlet and outlet, and an inverted cup-shaped: rotary pistonfeccentrically operable in said chamber between its concentric walls and spaced'-from its top wall toiprovide auxiliary chamber, the topvwall of: said piston" having ai port therein forces- .tablishing communication between said firstnained chamber and said :auxiliary' chamber.

2. A fluid meter, comprising a cylindrical chamber including spaced innerand outer COIIC8I1tI1CWallS and having an inlet and an adjoining outlet, a radial partition in said. "chamber between its concentric walls and separatmgthe inlet fromthe outlet, and an inverted' cup-like piston frevolvable in said chamber in eccentric relation thereto and in constant peripheral; contact/with its outer wall, the headrandlower edge of the piston volumes of the fluidi. a :6. A water meterof thejcharacter described, 7 comprising a casing having an inlet-and an o bearing against the corresponding walls of said-chamber and said pistonhead having a between the top wall and the top wall of the main chamber over the piston, the top wall of said piston having: a port for establishing communication betwen' said main chamber and said supplementary chamber,

4. A water meter of the character described, comprising a casinghaving inner and outer concentric walls forming a' main chamber and" a downwardlyfacing recess formed in the top wall thereof and constituting a relatively small auxiliary chamber, said main chamber having an inlet and an outlet, 2.

blade disposed substantially radially of the main. chamber between its inlet and outlet, and an inverted cup-shaped piston operable in said-main: chamber a-nd having'a top wall constituting" a partition between the main chamber and the auxiliarychamber, said top wall havingan opening for establishing com munication between said chan ibers.

15. Awater meter ofthe character described, comprising a casing having inner and outer concentric walls forming a chamber having an inlet andan outlet for the fluid, a radiallydisposedvbl'ade in said chamber between its inlet and outlet, and an inverted, cup-shaped rotary piston operableinsaid chamber and having aslot in itsiside wall and acommunicatingnotchin its top'wall for receivingthe blade .and'p'ermittingmovement of the piston relative to'said blade, the slot in said piston being enlarged: intermediate its ends to effect the; admimion and discharge of extreme out-let,- a main cylindrical chamber housed within said casing and includinga bottom wall','-a top wall 'and'concentric intermediate walls, said chamber having an inlet and an outlet communicating with the casing-inlet and casing outlet, respectively,.- the top wall of said chamber'having a) centrally disposed downwardly-facing recess constituting an auxiliary chamber, a blade disposed in said chamber between its inletand outlet, a circular rotary piston of inverted cup-like shape eccentrically operable in said main chamber and having a driving element rising therefrom into the auxiliary chamber, the top wall of said piston having an openingtherein for establishing communication between said main chamber and said auxiliary chamber; and a registering mechanism carried by the top Wall of the main chamber and having a driven element in operative engagement with the piston-drivingelement. 7 V In witness whereof, I have hereunto set In hand. 7 g ERNEST GRANGER. e 

